Demountable rim



Aug. 14, 1923.

S. S. DAVIS DEMOUNTABLE RIM Filed June 24, 1921 2 Sheets-Sheet 1 fiamuelS. 'Dawis INVENTOR S. S. DAVIS DEMOUNTABLE RIM Aug. 14, 1923.-

Filed June 24,1921 2 Sheets-Sheet 2 Samuel S. $312M INVENTOR WITNESSES W,gv l

ATTORNEY 20 driver of an automobile.

j 151 1 r e SAMUEL s. Davis, or nrioorarrnnn, MISSOURI.

v nnr/romvrartn RIM. Application filed une 24,1921; Serial no. 480,125.

To all whom it may concern: nor, a fixed rim 3, upon which is removablyBe it known that I, SAMUEL S.DA'\ Is, a mounted a demountable rim 4.

citizen of the United States, residingat The fixed rim 3 is providedwith an -in Bloomfield, in the county ofstoddard and wardly-projectinglug 5 adapted to laterally '5 State of Missouri, have invented a new andengage an inwarfilly-projecting lug 6 on the 430 useful Demountable Rim,ofwhich the fold'emountable rim 1, the lug 6 projecting lowing is aspecification. through a slot or opening 7 formed in the This inventionrelates to vehicle wheels, fixed rim 3'. The lugs 5 and 6 are of suchand is more particularly directed to a dea width when placed adjacenteach other as mountable rim for use on automobile wheels. to becontained within the width of the de 85 Heretofore, variousconstructions of demountable rim 4. Those lugs are provide mountablerims have been made, wherein it with alined perforations 8 and S throughwas necessary to remove a number of comwhich is adapted to be lI1STLClthe bolt 10 plicated parts before it was possible to re for securing thelugs together.

move the tire, and. generally the adjacent Diametrically opposite thecenter of said surfaces of the demountable rim and the lug are alinedopenings, 11 and 12 perforatfixed rim became so thoroughly interlockedingthe rims 3 and 1, respectively, and that it was necessary to wedgethem apart adapted to receive the air valve of an inner by instrumentsnot ordinarily carried by the tube. I

. Upon opposite sides of the openings 11 An object of this invention isto provide and 12 of the respective rims are'spaced a new and improveddemountable rim which wedge-shaped members 13 and 14:. The may bereadily andeasily applied .whenwedges 13 are formed on the outerperiphery necessary to the fixed rim of an automobile of the rim 3,while the wedges 14 are formed 25 wheel and which contains very fewinterupon the inner periphery of the rim 1. The looking parts, so that:expert knowledge and wedges 14:, formed on the inner periphery speciallyconstructed tools will not be reof-the rim'4'c, are placed near theopenings quired for removing or replacingthe tire. 12 iii the rim 4,while the wedges 13 formed Ihe invention will be best understood on theouter periphery, of the rim 3 are 30 from a consideration'of thefollowing deadapted to engage the rim 1 on opposite tailed dscriptiontakenin connection" with 'sidesof the wedges 141 and to loosely engagethe accompanying drawing forming part of the sideedges of said wedges,to assist in this specification, with the understanding, preventingrotation of the demountable rim however, that the invention is notconfined on the fixed rim and likewise to tighten the 35 to any strictconformity with the showing rlms upon each. other when they are in lock-4 0 pressed inthe appended claims.

in the drawing; but may bee changed and ing position. modified so longassuch changes and modi- Upon opposite sides of the lugs 5 and 6fications mark no material departure from of the respective rims arelocated complethe salient features of the invention as GX- mentarywedge-shaped members 15 and 16,

respectively, which are adapted to slide di In the drawing: rectly uponand grip each other firmly to Flg. l is a side elevatlon of anautomobile make aimore'securo fitting of the rims when with myinventlonapplled. jthe demountable rim is looked upon the Fig. 2 is avertical transverse section of fixed rim. All these wedges 13, 14, 15and 45 the fixed rim and'the demountable rim. 16 may be cast" integrallywith the rims, or

Fig. 31s a view in perspective of the two they may be made separatelyand of copper rims. g p or some soft metal and be soldered or brazedFig. 4: 1s a perspective of the tool used in on after the rims have beencast. By formremoving the demountable rim. ing'the wedges of suehmetal,noise will be 50 Fig. 5. is a section of the rim along theprevented'when the-rims are not snfliciently line 55 of Fig. 2, in thedirectionindi'cated tightened upon each other, and when the bythearrow.V 3 vehicle is in motion, since. 'the'hard metals Referring tothe,drawing, 1 designates a .are relievedfrom frictional engagement wheelprovidedwith a" felly 2, upon which is with each other. Other wedgeshaped memadapted to be secured,-in anysuitable manbers, such as 17, maybe formed upon the remaining portion of the periphery of the fixed rim 3to provide a more thorough fitting of the rims upon each other, and ifthe wedges 17 are likewise made of soft mate rial, they will necessarilyprevent noises and reduce the friction between those portions of therims when the wedges have been applied.

Spaced upon opposite sides of the opening 11, in the fixed rim 3, areslots 18 into which are adapted to be inserted lugs or projections 19formed upon the inner surface of the demountable rim It will be notedfrom Fig. 2 that these lugs 19 fall somewhat short of the length of theslot, but neatly fit the width of the slot, the object of such aconstruction being to permit a slight rotational movement of thedemountable rim when the rim is being mounted upon the fixed rim, but toprevent lateral move ment of the rims when the rims are locked 1nposition. The edges of the lugs 19 are made slightly round in order thatthe lugs may more readily be inserted into the slots 18..

Furthermore, it will be noted that the lug 6 fits snugly within the slot7 of the rim 3 so that the side edges of the lugs 6 will abut the sideedges 20 of the slot 7 and further aid in preventing rotational movementof knife edge flange 21 which is adapted to engage snugly the curvedportion 22 of the demountable rim 1 so that a tight fitting of V therims is presented along this side of the wheel to prevent dirt or dustfrom working its way betweenthe rims. The outer surface of the fixed rimis inclined at 23 outwardly from the flanged portion 21 to the annularedge of the rim.

Fig. 1 discloses a tool 2 1 which will be helpful in removing thedemountable rim, and is provided with a beveled edge portion 25 adaptedto be inserted between the rims whe forcing them apart, while theopposite end of the tool is provided with an opening 26 of such aconfiguration that it may neatly fit a nut 27 of the bolt 10 for turningthe same in preparation of releasing or securing the lugs 5and 6together. In other words, the tool 2a is a combined wrench and tireremoving tool.

The operation of my device is as fol lows :,-The tire 28, with thenecessary inner tube, is placed upon the demountable rim 4: and inflatedwith the valve stem of the inner tube projecting through the opening 12.The rims are brought together in such a manner that the valve stem willalso project through the perforation 11 of the rim 3 and the lugs 19 ofthe demountable rim 1 will be positioned in the slots 18 of the fixedrim 3. Pressure may now be applied to the demountable rim 1 at and onopposite sides of the lug 6, when the demountable rim will readily slipin place upon the fixed rim 3, the lug 6 falling in juxtaposition withthe lug 5. The bolt10 is inserted throughthe alined perforations 8 and 9of the lugs and the nut 27 is tightened by means of the tool 24. 1

The removal cf'the tire is effected by re moving the nut 27 and the bolt10, and

' applying the tool either between the lugs 5 and 6 to start theseparation of the rims, or the beveled edge 26'of the tool may beapplied directly between the rims to force the rims apart. As soon asthe upper portion of the demountable rim is loosened, the rim may beremoved by firmly pulling upon the portion of the demountable rimnearest the lug 6, when the lower portion of the rim will be readilypulled away from the fixed rim and the lugs 19 will be forced from theirsockets 18. g 7

What is claimed is V p 1. In a vehicle wheel, ademountable rim, a fixedrim, spaced openings in the fixed rim, spaced lugs depending from theinner face of the demountable rim and projecting through said openings,and lugs projecting inwardly from the rims and adapted to be securedtogether, one ofthe rims having a portion of its periphery cut away, thecut. out portion receiving the lug of the other rim.

2. In a vehicle wheel, a demountable rim, a fixed rim, spaced sockets insaid fixed rim,

lugs on the demountablerim and projecting into the sockets, lugsprojecting inwardly from the rim having their adjacent sides inabutment, means for securing the lugs to-; gether, and cooperatingwedge-shaped members on the rims located on opposite sides of thesecured lugs and-in engagement with each other to bind the rims togetherat that point.

3. In a vehicle wheel, a demountable rim, a. fixed rim, lugs projectinginwardly from the rims and adapted to be secured together, complementarymeans on the rims engaging each other and adapted to bind those portionsof the demountable rim which are lo cated on both sides of the inwardlyprojecting lugs to the fixed rim,and lugs project ing from thedemountablerim and engaging slots in the fixed Jrim to prevent lateralmovement of the rims. i

4:. In a vehicle wheel, a demountable rim, a fixed rim, lugs projectinginwardly from the rims and adapted to be secured together, the lug onthe demountable rim projecting through an opening in the fixed rim,means on the rims adapted to prevent portions of the inner surface ofthe demountable rim; and the outer surface of the fixed rim fromfrictionally engaging each other, and means on the demountable rimengaging complementary means on the fixed rim to prevent lateralmovement of the rims.

5. In a vehicle wheel, a demountable rim, a fixed rim, lugs projectinginwardly from the rims and adapted to be secured together, said rimbeing provided with alined openings for the insertion of an air valve,means on the rims and located upon opposite sides of the openings forthe air valve to prevent the demountable rim from rotating on the fixedrim, and complementary means spaced upon opposite sides of said openingsin the rims and adapted to engage each other to prevent lateral movementof the demountable rim.

6. In a vehicle wheel, a demountable rim having a lug projectinginwardly from its inner face, said lug having one side face flush withone side of the rim and the other side face spaced from the other sideof the rim, a fixed rim having a lug projecting in- Wardly from itsinner face with one side face flush with the side of the rim, the rimbeing slotted for a distance equal to the length of the lug, which slotextends widthwise from the lug to the other side of the rim to form asocket for the reception of the lug of the demountable rim, the sides ofthe slot engaging the opposite ends of the lug on the demountable rim toprevent rotation of said rim, means for securing the lugs to gether andmeans coacting with said lugs to hold the rims against relative lateraldisplacement.

7. In a vehicle Wheel, a demountable rim, a fixed rim, lugsprojectinginwardly from the rims and adapted to be secured together, and means onthe demounta-ble rim adapted to loosely engage complementary means onthe fixed rim to permit a slight rotation of the demountable rim on thefixed rim when said demountable rim is being placed in position on thefixed rim but to prevent lateral movement of the demountable rim on saidfixed rim when positioned.

8. In a vehicle wheel, a demountable rim, a fixed rim, lugs projectinginwardly from the rims and adapted to be secured together, the face ofthe fixed rim being provided with spaced elongated openings, elongatedprojections on the inner face of the demountable rim having a lengthless than the length of the openings to permit a slight rotation of thedemountable rim when being placed in position on the fixed rim, theprojections being of a. width to snugly fit the openings whereby lateralmovement of the rims is prevented when said rims are in position.

In testimony, that I claim the foregoing as my own, I have heretoaifixed my signature. V

SAMUEL S. DAVIS.

